Top for furnaces.



F. C. STIMMEL.

TOP FOB. FURNAGES.

vAPPLIOMION FILED MAB. 1a, 1909.

2 SHEETS-SHEET 1.`

Patented Dec.28,1909.

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TOP FOR FURNAGBS.

APPLIOATION FILED MAB. 1B,- 1909.

944,296. Patented Deo.28,1909.v

Z SHEETS-SHEET 2.

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anoinusd/ I UNITED lsfrArEs E. i

FREDERICK o. vsain/IMEI., or, cHA'r'IrANooGA," TENNESSEE Ass-tenor. 'ro man CASEY- HEDGES COMPANY, OF CHATTANOOGA.TENNESSEE,,A CORPORATIONOFQHIO.

, specification.

My improvementlrelates to an improved top for furnaces and relates especially to an lmproved' flat top for all kinds of Dutch oven furnaces whether boiler furnaces or other kinds.

My object is to dispense with the ordinary arch top and employ in lieu of the old fashioned arch a fiat top and so construct the parts that there will bean improved top casing. one that will be protected from the heat of the furnace with a maximum ofV strength in the supporting elements, while permitting ready access for repairs by the inexperienced mechanic.

Referring to the drawings, Figure 1 is a transverse sectional viewl showing two boilers above the flat top of the furnace. Fig. 2 is a longitudinal sectional view on the line of F ig. l. Fig.- 3 is a` detail view showing the supporting girders and intermediate supporting elements for the brick or tile.`

Figs. 4 and 5 are detail views'of the intermediate supporting element. detail View of the bolt connecting the girder with the intermediate supporting element. Fig. 7 is a detail view of the spacing block. Fig. S shows a modification of the circulating means.

Like characters of reference indicate like parts throughoutthe several views.

Referring to the drawings, I preferably employ' a plurality of main supports and have shown the ordinary I-beam, a, though lit is 'obvious that any supporting means of similar character can be employed, the object being to support from said I-beam the intermediate elements which in turn support the brick or tile, and the intermediate element is so arranged that the air readily circulates through it, soias to minimize all danger of the parts buckling. or breaking down soV as toendanger .the wall itself.

lMoreover, it will be seen that the efficiency ofthe furnace is improved aswell as the i circulation-of air, as hereinafter more fully described.

The I-beams,fa, extend across the furnace u Spegication of Letters Patent.

v desired manner. I-beam are connected bolts, a2.

Fig. 6 1s a Tor-ron annuliens.

and' are supported by the end Walls in any To each `ange, al, of said After'l the bolts have been inserted within the Vintermediate supporting element so as to support said intermediate supporting element, it still permits the circulationv of airthrough said element. For this purpose, the bolt is formed with a head, a3, and same is"y adapted to be inserted within the slot, a4,formed in the top ofthe pipe or intermediate supporting element, a5. isinserted-within said slot or opening,'at,

yformed in the top of the pipe, the bolt may Patented ee. as, isos.

Application filed March 18,` 1909. Serial No. 484,341.

After the head of the bolt main supporting element-the 4I-beam, will support the intermediate supporting element-the pipe, a5. Referring to Fig. 3, it

`is seen that lthere area plurality of intermediate supporting elements extending substantially transverse to the main supporting elements and each intermediate element is connected to each I-beam by two bolts, one suspended on each side of the I-beam from the lower flanges'thereof. The intermediate supporting elements, d5, are open at their outer end, as indicated in Fig. 2, so that the air may readily circulate through said pipes forthe purpose hereinafter more fully explained.

The brick or tile, b, (seeFig. 3) are formed at their sides with semi-circular grooves, b1, and these grooves fit about the correspondlng part of the pipe, so that each brick or tile is supported from each side by bearing against its associated pipe. ,As shown clearly in Fig. 2 there is a slight space or opening between the `projecting ends of the' brick or tile, b, and above the intermediate supporting element. The conformation of the tile or brick below the supporting end is clearly shown in Fig. l and each tile is formed with a tongue, b2, on one and it will be seen that each spacing block is formed with a reduced lower end, b5, having projecting ledges,

.upper part of the pipe, and the ledges,

. ing block spacing-blocks and the wardly to a point above be.' The reduced end, b5, is adapted to fit within a slot, at, of the of the pipe.

rest -upon the top two associatedbolts with their heads extending within the pipe holding. them in the position'tobe assumed by same and 'then insert the spacing block `between the two bolts so that each`.bolt will lie within the groove, 57, formed on each side of the spacand thereafter insert the'tops of the bolts in y the openings formed inthe flanges of the I-beam, then secure said bolts by the'ordinary'nuts.A In this manner the bolts will beheld in proper position by the pipes or intermediate supporting. elements will in turn be held by the bolts, and the brick or tile will be supported by the pipes.

The air passages formed in the end of the wall, indicated by b9, permit the air to cir-l culate through the pipes,

the top wall (Fig. I have also shown 8) or to the furnace;

permit an improved openings, b1", which circulation about thev brick..

. ing

. diate supporting elements As shown in Fig. 2, I preferably employ supporting pipes open at both ends and connect the inner ends with an air passage, b", which terminates above the furnace top so that the air may circulate entirely through the pipe and pass out through theV air passage, b", though I have shown in Fig. 8 a modification where the inner end of the pipe a5, connects with a passage, b9, extendlaterally and opening outwardly at the side wall. In said modification there is pre-- sented practically a smokeless furnace, since the air admitted to said furnace is heated air, 'as it can be readily seen that the air circulating through the pipes and orifice, b9, will'be heated to a very high temperature. But, in either event, vthere will be a desirable circulation of air through the interme' so as to prevent the heat from the furnace buckling or causing the supporting elements to give way and permit the weight of the top to cause the entire top to collapse.

. In this'manner 1t is apparent that I have -disclosed an improved flat top Iwhich 1s easily repaired, while 4presenting a very eilicient construction overcoming evils that have beenc attendant upon Vconstructions in use due largely to the fact that the top of b In assem-al. bling the yparts-,it 1s desirable to place the a5, and thence out-- as specified.

same,

the furnace is exposed to excessive heat and v Furthermore, -1 it 'is now apparent that the brick or tile lie' destructive effects of gases.'

in a true `vertical position while protected against the destructive edectof the heat and gases, there being ,no strain on while the supporting grooves, 51,'are prefer.- ably7 curved, being rounded in the manufacture of the brick so that there is noy tendency for the brick'to jcra'ck as there would be ifl the supporting formations in the brick were angular or formed with sharp bends or turns to lit the intermediate supporting element.

Having thus described my invention, I claim: i

l. In a top furnace wall, the'combination of main supporting elements with intermediate supporting elements, said last mentioned elements being hollow and having openings extending vto the interior thereof, connecting devices main supporting elements through the openings in said intermediate supporting elements and within the interior thereof, each the' vbrick l extending from said having a head portion capable of being turned over after insertion leaving a passagelway below' said head portion and means adapted to close said openings, bricks having channels or .grooves close same, substantially as specified.

2. In a top furnace wall, the lcombination of main supporting elements with intermediate .supporting elements,'said lastl mentioned elements being hollow and havin openings extending to the interior thereof, connecting devices extending from said main supporting elements through the openings in said intermediate supporting. elements and within the interior thereof, each having a head portion capable of being ,turned over after insertion leaving a passageway below and means adapted to close said openings, bricks having channels or grooves formed therein adaptedV to fit over said intermediate elements and inclose said hollow members being adapted to have air passing therethrough, substantially JN0. A. STEWART.

formed therein adapted to fit over said intermediate elements and in-4 

